Today, I was bored and obsessed, I decided to go beyond my previous symbol keyboard while ̵p̵l̵a̵y̵i̵n̵̵g̵ ̵w̵i̵t̵h̵ learning the intricacies of the unicode diacritical combining characters so I coded a diacritics keyboard

On my PC, even with the Aarial Unicode MS font (one of the the most comprehensive Unicode font) not everything is rendered properly (this is to be expected since "...as of 2010, few applications support correct rendering of such combinations..."). On the Kindle matters are only worse Can't do much with this...

There can be only one # expression (and nothing else) in the key or in the value. To remove this constraint, I would have to completely rewrite the hack as the event handling is not prepared for such definitions.
The same thing (setting volume level to certain value) can be achieved by using launchpad.

localization-k4 is a tree containing Czech localization of Kindle 4.
As Kindle 4 does not have a keyboard, K4 version of physkeyb is not included, keyboard localization is handled differently (by modifying key selection dialogue contents).
Physkeyb works by inserting a KeyEvent handler in the chain, even if it would work the same way on K4 (I doubt it), you would need to deobfuscate the framework code first to find the correct names of involved classes and change Physkeyb code accordingly.

I knew what the code does as I exploded the installer using kindletool and then just eyeballed the classes in gedit. Even as "compressed classes" the strings gave away what their function were.

I did try hunting around for some details on the k4's internal "Key" operation but it seems to be a largely overlooked device.

Okay well the OP was busy ripping apart his k4 I believe last night so let's see what some more reading of their efforts today brings. Thanks for taking the time to explain all this. It is appreciated.

Hi,
I am new to hacking kindle. But I need to because my kindle keyboard 5 way controller did not move most of the time. It is a hardware problem. All other keys are functioning. I followed the threads from Dsmid responding Telharmonium.
I finished jail break it in order to have keys assigned to the 5 way controller.
Thanks to Dsmid that i used the version of update_physkeyb_3.4.6-cs-sk_k3g_install.bin.
After update ( I am lucky to able to do this once), I can have the following folders:
.active-content-data, audible, documents, extensions, keyboard, linkjail, music, system, usbnet.
For the keyboard folder, I got cs-sk.kbd, install, kindle.kbd, and layout files. There is no keyboard.txt file.
Just wonder what should I do next in order to map the awdxs to 5 way controller. Please help.
Thanks.

Thanks. I get the keyboard assigned to 5 way controller. That works for my kindle. I can enjoy reading via the kindle again.
How to further modify the file if I can type back the small letter axwds in other situations? on and off for this allocation.